<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>纯css实现开箱子动画</title>
    <link rel="stylesheet" href="index.css">
</head>
<body>
    <div class="box">
        <div class="side front"></div>
        <div class="side back"></div>
        <div class="side left"></div>
        <div class="side right"></div>
        <div class="side top">
            <div class="tl"></div>
            <div class="tr"></div>
        </div>
        <div class="side bottom"></div>
        <div class="text"> 点开的人发大财!!! </div>
    </div>
</body>
</html>